Reservoir-pen.



W. W. SANFORD.

RESERVOIR PEN.

FP LIGATION FILED APB.. 9, 1909.

Patented Sept. 6, 1910.'

La ,erro/Mfr UNITED sTATEs PETENT oEEIcE. i

WILLIAM W. SANFORD, 0F NEWARK, NEW JERSEY, ASSIGNOR T0 SANFORD & BENNETT COMPANY, OF NEW YORK, N. Y., A. CORPORATION OF NEW YORK.

RESERVOIR-PEN.

Specication of Letters Patent. vPatented Sept, 6, 1910.

Application filed April 9, 1909. Serial No. 488,993.

To all whom it may concern.'

Be it known that I, lViLLrAM iV. SAM FORD, a citizen of the United States of America, and a resident of the city of Newark, county vof Essex, and State of New Jersey, have invented certain new and use- Essentially the invention consists in providing the cap, which covers and protects the pen or needle when not in use, with a y valve or auxiliary cap which so seats, hen

the cap is home to place, as to prevent any leakage of ink, even should the pen be carried with the pen or needle downward; and the said auxiliary cap is preferably swiveled in the main cap; so vas to be capable of independent axial rotation as Well as of a certain universalwabbling motion.

Referring to the drawings, which accompany the specification to aid the description,

Figure l is a longitudinal section and eleva-" tion, on largefscale, of the invention applied :to a stylographic pen. Fig. Q'is aflongitudin al section and elevation, on the same scale,

ofthe invention applied to 'a fountain pen. Fig.` 3 is an 'elevation of Ythe needle and end ofthe pen section of Fig. l. Fig. l is-a section on the line LA of Fig. 1. Fig. 5 is a section and elevation of a modification of the plug in which theauxliliary cap is swiveled.

Referring to Figs'. l, 3 and 4, A being the barrel or reservoir of a stylographic pen, B the pen section with the needle'b, and C the cap, the auxiliary cap or valve is constructed and arranged in Athe following manner: Inthe outer end of said cap C threads a plug' D, through-bored at lc to form asocket for the head kof the stem g, and saidthroughbore 7c is connected with the enlarged central orifice of-a diametrical slot Z eut-through the outer face of said 'plug D; lsaid stem g and head la having' an easy' rotary Wabbling fit respectively in said orificeV and through-bore.

The auxiliary cap E is preferably formed as a shouldered sleeve, in the closed end of which is secured the end of said stem g; andv the smo'oth-'endjof -the neck f of said. auxI iliary cap, which neck fits Within the ianged end j of the said pen section B, @institutes a valve, as clearly shown in Figs. 1 and 3. The space or chamber Withinsaid auxiliary cap E serves to cover and protect the said needle and end of the pen section when the parts are assembled and the'cap C is in the position of Fig. 1, and I prefer to place in the end of saidchamber a disk of rubber n to protect and close the tube and needle b. The said auxiliary cap E is of such size and shape and so adjusted in thev ca-p C, that when said cap C is screwed home to place'.

- over the pen section B in the usual manner,

the end of the neck f enters said iianged.

end j of the pen.'l section, until the end of said neck cont-acts with the true Vfiat surface of the end of said pen section B, when frietion will prevent the revolution of said auxiliary cap E, and the said cap C. with its plug D Will thread fully home to place, pressing-saidend of neck f tightly on said end of the. pen section, thereby closing the air feed port c in said pen section end, and thus preventingleakage of ink should the pen be carried ,With point of the needle down. The swiveling of the said auxiliary 'ca E in the cap C has the great advantage t iat, as the auxiliary cap does not revolve after it has contactedwith the end of the pensee` vauxiliary cap were mounted immovably inv said cap C, then the revolution Aof said auxiliary cap, as cap C turned fully home toy place would be liable to Wipe or suck ink from or through said air feeding port.

Another advantageof-the capability of`. the

said auxiliary cap E for independent rotary and Wabbling motion, is that in unscrewing' the cap C the said yauxiliary ca does not revolve,'but remains at rest unti Aseparated from vthe pen section, thereby obviati'ng the danger of unscrewing the pen section as the cap is unscreWed.

Referring to Fig. 2, A being the barrel or .reservoir-of a fountain pen," B the pen section and C the cap thereof, the end of said pensection is shown with an .internal con-v ica-l bearing surface o on which fits, when home to place, the correspondingly beveled end of the neck .f of auxiliary cap. E', the chamber 'in said auxiliary cap being arranged to receive and protect said pen B4 parts are assembled and said cap When'the C ishome to place, as indicated in Fig. 2. Said auxiliary cap E is preferably suspend` ed from plug` D so' as to be capable of an independent rotary and Wabblmg motion,

by the headed stem g/ L, said plug D being provided with a through-bore 7;, and slot Z as hereinb'efore described. As said cap C is screwed home to place, the beveled end of the valve neck f' contacting with the conical flange of said pen section B', said auxiliary cap E ceasing to revolve is pressed tight to its seat, and prevents leakage should the fountain pen be carried pen end down. In the case of fountain pens, the independent motion of the auxiliary cap is desirable, but is not indispensable, because as above stated it removes the danger of unscrevving the pen section when the cap is unscrewed. and of course the auxiliary cap of stylographic pens might be provided with a beveled surface adapted to close upon a corresponding surface ot' the pen section.

vReferring to Fig. 5, cap C, and auxiliary cap E are similar to the cap and falve of Fig. l. but the plug D2 is chamber-ed to take a threaded washer a, which retains the head z of stem y] in the through-bore 7c of said plug D#` said stem passing` with easy Wabhling fit through the hole in said Washer .si y To assemble the valve ll and plug D,v With the construction of Figs. 1 and Q, the valve stem g being secured in the end of said auxiliary cap E. thc slot Z in the plug D is sprungl open sufficiently by any suitable tool topermit the insertion of the said stem through the slot to the central orifice. Then the said slot is permitted to close to normal dimensions, and the auxiliary cap will be movably attached to the plug. To assemble the plug and auxiliary cap, with the con- .strut-tion oi' Fig. .l thi` stem is passed through the hole in Washer s, and its outer end is then secured in the end of auxiliary cap E. rlhe said washer s is then threaded into the plug by means of a suitable tool. Another method of assembling the parts is to heat the plug D and then to force the head it therethrough and into its aforesaid socket. N ow having described my improvements, I claim as my invention: f

1. The combination ivith a reservoir pen and pen section. of a cap, a plug therein, and an auxiliary cap swiveled in said plug and adapted to seat on said pen section and prevent leakage ot' ink, substantially as' described. v

2. The combination with a cap for reservoir pens, of a chambcred plug, an auxiliary cap provided with a stem sWiveled in the chamber ot said plug and with a part having a valve surface, substantially as described. 3. The combination With a reservoir pen and section provided with an air feeding orilice7 ot a main cap and an auxiliary cap freely rotatable therein and adaptfid to seat on the end of the pen section and to close said air feeding orificeg substantially as described.

. 4. ln a reservoir pen, the combination of a pen section, a main cap, an auxiliary cap seating upon the outer end of said pen section and freely rotatable in said main cap, and an ink-holding chamber in said auX- iliary cap. substantially as described.

Signed at New York city this'Gth day of April 1909. I

VlLLlM iV. SANFR-D. iitnesscs:

il. V. BuowiN, rai/riti: Timms. 

